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US06485877B2 Magnetic particles and magnetic carrier for electrophotographic developer 有权
用于电子照相显影剂的磁性颗粒和磁性载体

  • 专利标题： Magnetic particles and magnetic carrier for electrophotographic developer
  • 专利标题（中）： 用于电子照相显影剂的磁性颗粒和磁性载体
  • 申请号： US09352890
    申请日： 1999-07-14
  • 公开(公告)号： US06485877B2
    公开(公告)日： 2002-11-26
  • 发明人: Toshiyuki Hakata
  • 申请人： Toshiyuki Hakata
  • 优先权： JP10-203192 19980717
  • 主分类号： G03G9113
  • IPC分类号： G03G9113
Magnetic particles and magnetic carrier for electrophotographic developer
摘要：
Magnetic particles having an average particle size of 10 to 200 &mgr;m, comprising: magnetic core particles; and a coating layer formed on each surface of said magnetic core particles, comprising at least one metal alkoxide represented by the general formula (I): (RO)nM  (I)  wherein R is a C1 to C16 alkyl group; M is Al, Ti, Na, K, Ca, Zn or Fe; and n is an integer of 1 to 4, at least one silane-based coupling agent, and a silicone resin. Such magnetic particles have an excellent durability and a stable charging property.
摘要（中）：

平均粒径为10〜200μm的磁性粒子，包括：磁性核粒子; 和形成在所述磁芯颗粒的每个表面上的涂层，其包含至少一种由通式（I）表示的金属醇盐：其中R是C1至C16烷基; M是Al，Ti，Na，K，Ca，Zn或Fe; n为1〜4的整数，至少一种硅烷类偶联剂，硅树脂。这种磁性粒子具有优异的耐久性和稳定的带电性。

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